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powerpc/asm: Define STACK_PT_REGS_OFFSET macro in asm-offsets.c 

There are quite a few entries in asm-offests.c which look like:

  DEFINE(REG, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, reg));

So define a macro to do it once.

Signed-off-by: Rashmica Gupta <rashmicy@gmail.com>
[mpe: Rename to STACK_PT_REGS_OFFSET for excruciating explicitness]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Rashmica Gupta 2016-06-02 14:29:47 +10:00 committed by Michael Ellerman
parent 4546561551
commit 10d4cf188a
1 changed files with 32 additions and 29 deletions
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61
arch/powerpc/kernel/asm-offsets.c
View File

@ -72,6 +72,9 @@
#include <asm/fixmap.h>
#endif
#define STACK_PT_REGS_OFFSET(sym, val) \
DEFINE(sym, STACK_FRAME_OVERHEAD + offsetof(struct pt_regs, val))
int main(void)
{
OFFSET(THREAD, task_struct, thread);
@ -265,38 +268,38 @@ int main(void)
DEFINE(PROM_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
DEFINE(RTAS_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
#endif /* CONFIG_PPC64 */
DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0]));
DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1]));
DEFINE(GPR2, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[2]));
DEFINE(GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[3]));
DEFINE(GPR4, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[4]));
DEFINE(GPR5, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[5]));
DEFINE(GPR6, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[6]));
DEFINE(GPR7, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[7]));
DEFINE(GPR8, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[8]));
DEFINE(GPR9, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[9]));
DEFINE(GPR10, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[10]));
DEFINE(GPR11, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[11]));
DEFINE(GPR12, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[12]));
DEFINE(GPR13, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[13]));
STACK_PT_REGS_OFFSET(GPR0, gpr[0]);
STACK_PT_REGS_OFFSET(GPR1, gpr[1]);
STACK_PT_REGS_OFFSET(GPR2, gpr[2]);
STACK_PT_REGS_OFFSET(GPR3, gpr[3]);
STACK_PT_REGS_OFFSET(GPR4, gpr[4]);
STACK_PT_REGS_OFFSET(GPR5, gpr[5]);
STACK_PT_REGS_OFFSET(GPR6, gpr[6]);
STACK_PT_REGS_OFFSET(GPR7, gpr[7]);
STACK_PT_REGS_OFFSET(GPR8, gpr[8]);
STACK_PT_REGS_OFFSET(GPR9, gpr[9]);
STACK_PT_REGS_OFFSET(GPR10, gpr[10]);
STACK_PT_REGS_OFFSET(GPR11, gpr[11]);
STACK_PT_REGS_OFFSET(GPR12, gpr[12]);
STACK_PT_REGS_OFFSET(GPR13, gpr[13]);
#ifndef CONFIG_PPC64
DEFINE(GPR14, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[14]));
STACK_PT_REGS_OFFSET(GPR14, gpr[14]);
#endif /* CONFIG_PPC64 */
/*
* Note: these symbols include _ because they overlap with special
* register names
*/
DEFINE(_NIP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, nip));
DEFINE(_MSR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, msr));
DEFINE(_CTR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ctr));
DEFINE(_LINK, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, link));
DEFINE(_CCR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ccr));
DEFINE(_XER, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, xer));
DEFINE(_DAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
DEFINE(_DSISR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
DEFINE(ORIG_GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, orig_gpr3));
DEFINE(RESULT, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, result));
DEFINE(_TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));
STACK_PT_REGS_OFFSET(_NIP, nip);
STACK_PT_REGS_OFFSET(_MSR, msr);
STACK_PT_REGS_OFFSET(_CTR, ctr);
STACK_PT_REGS_OFFSET(_LINK, link);
STACK_PT_REGS_OFFSET(_CCR, ccr);
STACK_PT_REGS_OFFSET(_XER, xer);
STACK_PT_REGS_OFFSET(_DAR, dar);
STACK_PT_REGS_OFFSET(_DSISR, dsisr);
STACK_PT_REGS_OFFSET(ORIG_GPR3, orig_gpr3);
STACK_PT_REGS_OFFSET(RESULT, result);
STACK_PT_REGS_OFFSET(_TRAP, trap);
#ifndef CONFIG_PPC64
/*
* The PowerPC 400-class & Book-E processors have neither the DAR
@ -304,10 +307,10 @@ int main(void)
* DEAR and ESR SPRs for such processors. For critical interrupts
* we use them to hold SRR0 and SRR1.
*/
DEFINE(_DEAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
DEFINE(_ESR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
STACK_PT_REGS_OFFSET(_DEAR, dar);
STACK_PT_REGS_OFFSET(_ESR, dsisr);
#else /* CONFIG_PPC64 */
DEFINE(SOFTE, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, softe));
STACK_PT_REGS_OFFSET(SOFTE, softe);
/* These _only_ to be used with {PROM,RTAS}_FRAME_SIZE!!! */
DEFINE(_SRR0, STACK_FRAME_OVERHEAD+sizeof(struct pt_regs));